8000 add test for 20 · zhahui/fishercoder1534-Leetcode@6fdb918 · GitHub
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add test for 20
1 parent 1c72f84 commit 6fdb918

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2 files changed

+54
-15
lines changed

2 files changed

+54
-15
lines changed

‎src/main/java/com/fishercoder/solutions/_20.java

Lines changed: 17 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -10,26 +10,28 @@
1010
* The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]" are not.*/
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public class _20 {
1212

13-
public boolean isValid(String s) {
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Deque<Character> stack = new ArrayDeque<>();
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for (int i = 0; i < s.length(); i++) {
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if (s.charAt(i) == '(' || s.charAt(i) == '{' || s.charAt(i) == '[') {
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stack.push(s.charAt(i));
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} else {
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if (stack.isEmpty()) {
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return false;
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public static class Solution1 {
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public boolean isValid(String s) {
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Deque<Character> stack = new ArrayDeque<>();
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for (int i = 0; i < s.length(); i++) {
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if (s.charAt(i) == '(' || s.charAt(i) == '{' || s.charAt(i) == '[') {
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stack.push(s.charAt(i));
2119
} else {
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if (stack.peek() == '(' && s.charAt(i) != ')') {
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return false;
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} else if (stack.peek() == '{' && s.charAt(i) != '}') {
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return false;
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} else if (stack.peek() == '[' && s.charAt(i) != ']') {
20+
if (stack.isEmpty()) {
2721
return false;
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} else {
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if (stack.peek() == '(' && s.charAt(i) != ')') {
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return false;
25+< 10000 div class="diff-text-inner"> } else if (stack.peek() == '{' && s.charAt(i) != '}') {
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return false;
27+
} else if (stack.peek() == '[' && s.charAt(i) != ']') {
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return false;
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}
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stack.pop();
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}
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stack.pop();
3032
}
3133
}
34+
return stack.isEmpty();
3235
}
33-
return stack.isEmpty();
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}
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}

‎src/test/java/com/fishercoder/_20Test.java

Lines changed: 37 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,37 @@
1+
package com.fishercoder;
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import com.fishercoder.solutions._20;
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import org.junit.BeforeClass;
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import org.junit.Test;
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import static org.junit.Assert.assertEquals;
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public class _20Test {
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private static _20.Solution1 solution1;
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@BeforeClass
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public static void setup() {
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solution1 = new _20.Solution1();
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}
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@Test
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public void test1() {
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assertEquals(false, solution1.isValid("(]"));
20+
}
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@Test
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public void test2() {
24+
assertEquals(false, solution1.isValid("([)]"));
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}
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@Test
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public void test3() {
29+
assertEquals(true, solution1.isValid("()[]{}"));
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}
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@Test
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public void test4() {
34+
assertEquals(true, solution1.isValid("()"));
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}
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}

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